with and . In other words, let and . Let . It can be shown that .
Prove that for , and for , , that
I'm really stuck on this one. Any help would be much appreciated. Thanks!
(By the way, this is from Fritz John, Partial Differential Equations, exercise 2.4.7b., p46.)
EDIT: Thanks for the help! It is now solved, with the following proof:
Originally Posted by me